Can't collapse all groups in new Outlook?

Yeah, this is a common issue with the new version of Microsoft Outlook. Right now, there isn’t a built-in option to collapse all groups at once like in the classic Outlook. You have to manually collapse them, which can be a bit frustrating. It seems like a limitation of the new interface rather than a setting you can change. Some users switch back to the old Outlook for this reason, but hopefully Microsoft adds this feature in future updates.